NATHANMONK
trumpetman
After experiencing bad wear on the original Bridgestones that came with my R1200RT model year 2013 I decided to give Metzler Z8's a try. While they did last a little, and I mean very little, longer than the Bridgestones I was still disillusioned with my tire performance. The Bridgestones lasted only 5500 miles and the Z8's only about 6400. So, after reading articles and researching the Michelin PR's I decided to go with the new PR4's. Though it is too early to tell how long they will last, I must say I am very impressed with they handle on the road. They center up really well and you can actually feel the shift from the harder centerline of the tire to the softer composite on the outer sidewalls. The tires feel like they grip really well. So, so far so good. Now, my big thing is just how much pressure to run in them. The owners manual says basically 36 in the front and 38 in the rear. Having installed car tires in my earlier years I learned that over inflation causes more wear in the center of the tire while under inflation causes greater wear on the outer rims of the tire. Of course, that is automobile tires. The PR4's are harder and much thicker in the centerline, more so on the rear tire. Now, my dealer says run them at 40 in front and back. I am dubious about these numbers as I feel they might be wanting me to wear out the tires sooner so they can sell me more. Humh, figure?
So, if anyone out there with experience with the PR's has any advice, please give it to me!
Next item, my manual says after 12,000 the valves on the camhead only need to be checked in 12,000 mile intervals. My BMW tech says 6,000. So, which is correct, the tech or the manual?
So, if anyone out there with experience with the PR's has any advice, please give it to me!
Next item, my manual says after 12,000 the valves on the camhead only need to be checked in 12,000 mile intervals. My BMW tech says 6,000. So, which is correct, the tech or the manual?
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